Silver halide photographic material

Details Silver halide photographic material Silver halide photographic material

1988-09-23

1990-10-16

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430139, 430572, 430576, 430631, 430635, 430636, G03C 112, G03C 128

Patent

active

049634763

ABSTRACT:
A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer containing at least 1.0.times.10.sup.-4 gram equivalent of an anionic surface active material as anion per gram of a hydrophilic dispersion medium in the emulsion layer, the material having dispersed in the emulsion layer a light-collecting dye that has an emission band overlapping at least partially with the optical absorption band of a spectral sensitizing dye on a silver halide grain present in the emulsion layer, the light-collecting dye having an emission quantum yield of at least 0.1 at a concentration of 10.sup.-4 mol/dm.sup.3 in dry gelatin at room temperature, with the proviso that the light-collecting dye and the spectral sensitizing dye may be the same compound.

REFERENCES:
patent: 2865744 (1958-12-01), Friedman et al.
patent: 3622316 (1971-11-01), Bird et al.
patent: 4040825 (1977-08-01), Steiger et al.
patent: 4543308 (1985-09-01), Schumann et al.
patent: 4551424 (1985-11-01), Ikeda et al.
patent: 4574115 (1986-03-01), Adachi et al.
patent: 4820606 (1989-04-01), Miyasaka et al.
Patent Abstracts of Japan, vol. 11, No. 340 (P-634) [2787], Nov. 7, 1987-Abstract of Japanese Patent Application Ser. No. 62-123454.

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